Metal column.



No. 782,495. PATENTED FEB. 14, 1905. w. P. EIOHFELD.

METAL COLUMN.

APPLIOATION FILED JUNE 28-. 190i.

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Zz/mwfz 3g UNITED STATES Patented. February 14, 1905.

PATENT OFFICE.

\IVIETAL COLUMN.

SPECIFICATION forming part of Letters Patent No. 782,495, dated February14, 1905;

Application filed time 28,1904. seriaim'mmsa T (LZZ whom it mayconcern.-

Be it known that I, WILLIAM F. EIOHFELD, a citizen of the United States,residing at Milwaukee, Wisconsin, have invented new and usefulImprovements in Iron and Steel Columns, of which the followingis aspecification.

My invention relates to iron or steel columns built up of special shapesof angle-bars; and the object of the invention is to provide a column inwhich the parts shall be held together without the necessity of bolts orrivets.

I have illustrated the invention in the accompanying drawings, in whichFigure 1 is a sectional View of one form, and Fig. 2 a section of amodification.

According to my invention I provide a plurality of angle-bars 3, each ofwhich has two parallel portions 4 and 5, providing between them a recess6. The portion 5 is extended beyond the portion 4: and has an angularturned flange 7 which is adapted to engage the corresponding-recess 6 ofthe next ad joining angle-bar. The angle-bars when assembled occupy therelative positions shown in the drawings and are securely held togetherby a central key 8, driven longitudinally down the center of the column.This key may be a steel bar with a driving fit or a bar of soft Norwayiron placed in position and then swaged or upset.

It will of course be understood that in assembling the angle-bars toform the column; three of them are placed in position and then thefourth is slid longitudinally into place be- I claim is 1 A columncomprising a plurality of anglebars each having abifurcated web portionproviding a short flange, and a long flange with an angularly-turnededge, said angular-turned edge of each bar engaging the channel in thebifurcated portion of the next adjoining bar, substantially asdescribed.

2. A column comprising a plurality of anglebars each having abifurcatedweb portion providing a short flange and a long flange, with anangularly-turned edge, said angular-turned edge of each bar engaging thechannel in the bifurcated portion of the next adjoining bar, and afilling or key piece in the space inclosed by said bars, substantiallyas described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

IVILLIAM F. EICHFELD.

Witnesses:

'A. A. DREIs,

A. F. WAGNER.

